[Event "Alcorcon Diagonal op 2nd"]
[Site "Alcorcon"]
[Date "2023.12.27"]
[Round "3"]
[White "Sierra Pena, Mario"]
[Black "Fernandez Santos, Nicolas"]
[Result "1-0"]
[ECO "E14"]
[WhiteElo "1805"]
[BlackElo "1393"]
[PlyCount "61"]
[EventDate "2023.12.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "CB01_2024"]
[SourceDate "2024.01.03"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.03"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. e3 c5 4. b3 b6 5. Bb2 Be7 6. Bd3 Bb7 7. Nbd2 d5 8. 0-0 0-0 9. c4 Ne4 10. Qc2 f5 11. Ne5 Nc6 12. Nxc6 Bxc6 13. f3 Nxd2 14. Qxd2 Bf6 15. cxd5 Bxd5 16. Ba3 Re8 17. Bb5 Rf8 18. Rac1 a6 19. Be2 cxd4 20. Bxf8 dxe3 21. Qxe3 Kxf8 22. Rfd1 Bg5 23. f4 Be7 24. Bf3 Rc8 25. Bxd5 Rxc1 26. Qxc1 Bc5+ 27. Kh1 exd5 28. Qc2 Qd7 29. Qd3 d4 30. Qxa6 Qe7 31. Qc8+ 1-0

[Event "Alcorcon Diagonal op 2nd"]
[Site "Alcorcon"]
[Date "2023.12.26"]
[Round "2"]
[White "Fernandez Rosado, Roberto"]
[Black "Sierra Pena, Mario"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "2145"]
[BlackElo "1805"]
[PlyCount "83"]
[EventDate "2023.12.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "CB01_2024"]
[SourceDate "2024.01.03"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.03"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c3 Bg5 12. Nc2 0-0 13. a4 bxa4 14. Rxa4 Bb7 15. Bc4 Ne7 16. 0-0 a5 17. Ra2 Rc8 18. Nxe7+ Bxe7 19. Bd5 Bxd5 20. Qxd5 Rc5 21. Qd3 d5 22. b4 axb4 23. cxb4 Rc4 24. exd5 Qc7 25. Ra7 Qxa7 26. Qxc4 Qb7 27. h3 Rc8 28. Qe4 Bd6 29. Rb1 Qb5 30. Ne3 g6 31. Qg4 Rc3 32. Qg5 Qb8 33. Ng4 Qc7 34. Nf6+ Kf8 35. Ra1 Qc8 36. Ne4 Bxb4 37. Nxc3 Qxc3 38. Rc1 Qd4 39. Qf6 Bc5 40. Rb1 Bb4 41. Rxb4 Qxb4 42. d6 1-0

[Event "Alcorcon Diagonal op 2nd"]
[Site "Alcorcon"]
[Date "2023.12.26"]
[Round "1"]
[White "Sierra Pena, Mario"]
[Black "Garcia Lafuente, Alvaro"]
[Result "1-0"]
[ECO "A07"]
[WhiteElo "1805"]
[BlackElo "1232"]
[PlyCount "129"]
[EventDate "2023.12.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "CB01_2024"]
[SourceDate "2024.01.03"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.03"]
[SourceQuality "1"]

1. g3 d5 2. Nf3 Nf6 3. Bg2 Bf5 4. c4 e6 5. b3 Nc6 6. Bb2 Bc5 7. 0-0 Qe7 8. a3 a5 9. d3 0-0 10. Nbd2 Rad8 11. Ra2 Rfe8 12. Qa1 d4 13. Ng5 Qd6 14. Nge4 Nxe4 15. Nxe4 Bxe4 16. Bxe4 f5 17. Bg2 Qd7 18. Bc1 b6 19. Bd2 g6 20. Rb1 Kf7 21. b4 axb4 22. axb4 Bf8 23. b5 Ne7 24. Bb4 Rb8 25. Ra7 Rec8 26. Rb2 Bg7 27. Qa3 Qe8 28. Ra2 Bf6 29. Qc1 Kg8 30. Qe1 c6 31. Bxe7 Bxe7 32. Bxc6 Qd8 33. Rd7 Qf8 34. Raa7 Re8 35. Rdc7 Bb4 36. Rg7+ Qxg7 37. Rxg7+ Kxg7 38. Qxb4 Rf8 39. Qe7+ Rf7 40. Qxe6 Rd8 41. Bd5 Rdf8 42. Qxf7+ Rxf7 43. Bxf7 Kxf7 44. c5 Ke6 45. c6 Kd6 46. Kg2 g5 47. f4 g4 48. h3 h5 49. hxg4 hxg4 50. Kf2 Kc7 51. e4 dxe3+ 52. Kxe3 Kd6 53. d4 Kc7 54. d5 Kd6 55. Kd4 Ke7 56. c7 Kd7 57. d6 Kc8 58. Kd5 Kd7 59. Ke5 Kc8 60. Ke6 Kb7 61. Ke7 Kc8 62. d7+ Kb7 63. c8Q+ Ka7 64. Qc7+ Ka8 65. d8R# 1-0

[Event "ESP-ch U16 rapid"]
[Site "Salobrena"]
[Date "2023.07.29"]
[Round "1"]
[White "Bravo De la Vega, Alvaro"]
[Black "Sierra Pena, Mario"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "1957"]
[BlackElo "1478"]
[PlyCount "119"]
[EventDate "2023.07.29"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 d5 4. 0-0 c5 5. b3 Bg7 6. Bb2 0-0 7. e3 Nc6 8. c4 Bf5 9. cxd5 Nxd5 10. Bxg7 Kxg7 11. d4 Ncb4 12. Na3 Bd3 13. Re1 Nc3 14. Qd2 Ne4 15. Qb2 cxd4 16. Nxd4 Kg8 17. Nc4 Nc5 18. Ne5 Ba6 19. Qc3 Nbd3 20. Nxd3 Nxd3 21. Red1 Rc8 22. Qd2 Qb6 23. Bf1 Ne5 24. Rac1 Bxf1 25. Kxf1 Rfd8 26. Rxc8 Rxc8 27. Kg2 Rd8 28. Qc2 Qd6 29. Qe4 Qd5 30. Qxd5 Rxd5 31. Rc1 Rd7 32. h3 Nd3 33. Rc3 Nb4 34. a3 Na6 35. b4 Rc7 36. Rxc7 Nxc7 37. Kf3 e5 38. Nb3 f5 39. e4 Kf7 40. Na5 b6 41. Nc6 Ke6 42. Nxa7 Ne8 43. Nb5 Kd7 44. exf5 gxf5 45. g4 fxg4+ 46. hxg4 Nf6 47. Nc3 Ke6 48. Ne4 Ne8 49. Ng5+ Kd5 50. Nxh7 Nd6 51. Nf6+ Kc4 52. g5 Kb3 53. g6 Nf5 54. Ke4 Ng7 55. Nd5 b5 56. Kxe5 Kxa3 57. f4 Kb3 58. f5 Kc4 59. f6 Ne8 60. f7 1-0

[Event "Madrid Alcorcon op 1st"]
[Site "Madrid"]
[Date "2022.12.30"]
[Round "9"]
[White "Sierra Pena, Mario"]
[Black "Lozano Argueso, Cesar"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "1580"]
[BlackElo "1753"]
[PlyCount "92"]
[EventDate "2022.12.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c5 2. c4 Nc6 3. Nc3 g6 4. Nge2 Bg7 5. d3 d6 6. g3 Ne5 7. Bg2 Bg4 8. f4 Bf3 9. 0-0 Bxg2 10. Kxg2 Nc6 11. g4 e6 12. Ng3 Qh4 13. f5 Be5 14. fxe6 fxe6 15. Nb5 0-0-0 16. Bf4 Nf6 17. Qd2 Nxg4 18. h3 Nf6 19. Rf3 h6 20. Raf1 Nh5 21. Nxh5 gxh5 22. Bxe5 dxe5 23. Qe3 b6 24. Rf7 Rhg8+ 25. Kh2 Kb8 26. Rc7 Rc8 27. Rcf7 a6 28. Nc3 Rcd8 29. a3 Nd4 30. R1f2 Rg6 31. b4 Rdg8 32. Rf8+ Kc7 33. Rxg8 Rxg8 34. bxc5 bxc5 35. Na4 Qe7 36. Qxh6 Kd6 37. Qxh5 Qg7 38. Qg4 Qh7 39. Qd1 Qh4 40. Rg2 Qf4+ 41. Kh1 Rh8 42. Qg1 Rxh3+ 43. Rh2 Qf3+ 44. Qg2 Qd1+ 45. Qg1 Rxh2+ 46. Kxh2 Nf3+ 0-1

[Event "Madrid Alcorcon op 1st"]
[Site "Madrid"]
[Date "2022.12.29"]
[Round "8"]
[White "Jimenez Carrazoni, Javier"]
[Black "Sierra Pena, Mario"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "1872"]
[BlackElo "1580"]
[PlyCount "155"]
[EventDate "2022.12.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c3 0-0 12. Nc2 Bg5 13. a4 bxa4 14. Rxa4 Ne7 15. Ncb4 a5 16. Nxe7+ Qxe7 17. Nd5 Qb7 18. b3 Bd7 19. Ra1 Rfc8 20. Be2 Bc6 21. Bc4 Bb5 22. Bxb5 Qxb5 23. c4 Qc5 24. Ra4 Rcb8 25. 0-0 Bd8 26. Qd3 Ra7 27. Rb1 Rab7 28. Qc2 f6 29. Rb2 Kf7 30. Qd1 g6 31. g3 Qc6 32. Nc3 Bc7 33. Qc2 Rb4 34. Nb5 Rxa4 35. bxa4 Bb6 36. Qd3 Bc5 37. Rd2 Ke7 38. g4 Ke6 39. Re2 Rb7 40. Qh3 g5 41. Qf3 Kf7 42. Qf5 Kg7 43. Rd2 Bb4 44. Rc2 Qd7 45. Qf3 Qe6 46. h3 Qe7 47. Kg2 Rb8 48. Rc1 Rc8 49. h4 h6 50. h5 Qe6 51. Qe2 Rc5 52. Kg3 Kf7 53. Qd3 Ke7 54. Kf3 Kd7 55. Nc3 Qxc4 56. Qxc4 Rxc4 57. Ne2 Rxc1 58. Nxc1 Kc6 59. Nb3 d5 60. Ke3 Bc5+ 61. Kd3 Bb6 62. f3 Kd6 63. Kc3 Ke6 64. Kd3 Kd6 65. Kc3 d4+ 66. Kc4 Kc6 67. Nc1 Bc5 68. Nd3 Bb4 69. Kb3 Bc3 70. Kc4 Kd6 71. Kb5 Ke6 72. Kc6 Bb4 73. Kc7 f5 74. gxf5+ Kf6 75. Kc6 Bc3 76. Kd5 g4 77. fxg4 Kg5 78. Kxe5 1-0

[Event "Madrid Alcorcon op 1st"]
[Site "Madrid"]
[Date "2022.12.29"]
[Round "7"]
[White "Sierra Pena, Mario"]
[Black "Ribera Veganzones, Josep Maria"]
[Result "0-1"]
[ECO "A36"]
[WhiteElo "1580"]
[BlackElo "2167"]
[PlyCount "56"]
[EventDate "2022.12.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c5 2. c4 Nc6 3. Nc3 g6 4. d3 Bg7 5. Nge2 e5 6. g3 Nge7 7. Bg2 0-0 8. 0-0 d6 9. h3 Be6 10. g4 f5 11. gxf5 gxf5 12. exf5 Nxf5 13. f4 Nh4 14. Bd5 Qd7 15. Kh2 Ne7 16. Bxe6+ Qxe6 17. Qe1 Neg6 18. Nd5 Rf7 19. Ng3 Raf8 20. Qe4 Qd7 21. Rb1 exf4 22. Bxf4 Nxf4 23. Nxf4 Be5 24. Nge2 Ng6 25. Rg1 Bxf4+ 26. Nxf4 Rxf4 27. Qd5+ Qf7 28. Qxd6 Rf2+ 0-1

[Event "Madrid Alcorcon op 1st"]
[Site "Madrid"]
[Date "2022.12.28"]
[Round "6"]
[White "Neagu, Roberto Florin"]
[Black "Sierra Pena, Mario"]
[Result "1-0"]
[ECO "A28"]
[WhiteElo "2229"]
[BlackElo "1580"]
[PlyCount "73"]
[EventDate "2022.12.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e4 Bc5 5. Nxe5 Nxe5 6. d4 Bd6 7. c5 Bxc5 8. dxe5 Ng8 9. Qg4 g6 10. Qg3 c6 11. h4 d5 12. Bg5 Be7 13. exd5 cxd5 14. Bb5+ Kf8 15. Rd1 Be6 16. 0-0 h6 17. Bxe7+ Nxe7 18. Qf4 Nf5 19. h5 d4 20. hxg6 fxg6 21. Ne4 Kg7 22. g4 Qh4 23. Rc1 Rac8 24. Qf3 Bd5 25. Bd7 Rcf8 26. Bxf5 gxf5 27. Rc7+ Kg6 28. Qg3 Qxg3+ 29. Nxg3 fxg4 30. Rd1 Re8 31. Rxd4 Rxe5 32. Rxg4+ Kf6 33. Rf4+ Kg5 34. Rd4 Rf8 35. Rc5 Re1+ 36. Nf1 Kf6 37. Rf4+ 1-0

[Event "Madrid Alcorcon op 1st"]
[Site "Madrid"]
[Date "2022.12.28"]
[Round "5"]
[White "Sierra Pena, Mario"]
[Black "Criado de Diego, Pedro"]
[Result "1-0"]
[ECO "A36"]
[WhiteElo "1580"]
[BlackElo "2102"]
[PlyCount "109"]
[EventDate "2022.12.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c5 2. c4 Nc6 3. Nc3 g6 4. d3 Bg7 5. Nge2 e6 6. g3 Nge7 7. Bg2 d6 8. 0-0 0-0 9. Be3 Nd4 10. h3 Nec6 11. Rb1 Rb8 12. a3 Nxe2+ 13. Nxe2 b5 14. cxb5 Rxb5 15. Nc3 Rb8 16. f4 Nd4 17. Ne2 Nxe2+ 18. Qxe2 Rb3 19. e5 Ba6 20. Qc2 Qb8 21. Rfd1 dxe5 22. Be4 f5 23. Bc6 e4 24. Bd7 Bxd3 25. Bxe6+ Kh8 26. Qxb3 Qd6 27. Rbc1 Rb8 28. Qd5 Qb6 29. b4 Rd8 30. Qb3 g5 31. Rxc5 gxf4 32. gxf4 Re8 33. Bxf5 Rf8 34. Qe6 Rg8 35. Qxb6 Bd4+ 36. Kf2 Bxe3+ 37. Kxe3 Rg3+ 38. Kd4 axb6 39. Rc8+ Kg7 40. Bxe4 Ba6 41. Rc7+ Kf6 42. Rdc1 Bb5 43. R1c6+ Bxc6 44. Rxc6+ Ke7 45. Bxh7 Rxh3 46. Rxb6 Rxa3 47. Ke5 Re3+ 48. Be4 Kf8 49. Rb7 Re1 50. Kf6 Ke8 51. Bc6+ Kd8 52. b5 Rc1 53. f5 Rg1 54. b6 Kc8 55. Rg7 1-0

[Event "Madrid Alcorcon op 1st"]
[Site "Madrid"]
[Date "2022.12.27"]
[Round "3"]
[White "Sierra Pena, Mario"]
[Black "Arce Gonzalez, Dario"]
[Result "1/2-1/2"]
[ECO "A14"]
[WhiteElo "1580"]
[BlackElo "2035"]
[PlyCount "65"]
[EventDate "2022.12.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7 5. 0-0 0-0 6. b3 Nbd7 7. Bb2 c6 8. cxd5 exd5 9. d3 Re8 10. Nbd2 Bc5 11. Rc1 Bb6 12. Nd4 Ne5 13. N2f3 Qd6 14. Qd2 Nxf3+ 15. Nxf3 Bg4 16. Qg5 h6 17. Qh4 d4 18. Rfe1 Rad8 19. h3 Bf5 20. g4 Bg6 21. Rc4 Ba5 22. Rxd4 Qc7 23. Rxd8 Qxd8 24. Bxf6 Qxf6 25. Qxf6 gxf6 26. b4 Bxb4 27. Rb1 Bc5 28. Kf1 Re7 29. Nd2 Kg7 30. Nc4 Rd7 31. Ke1 Re7 32. Kf1 Rd7 33. Ke1 1/2-1/2

[Event "Madrid Alcorcon op 1st"]
[Site "Madrid"]
[Date "2022.12.26"]
[Round "2"]
[White "Culbeaux, Tello Oscar"]
[Black "Sierra Pena, Mario"]
[Result "0-1"]
[ECO "A05"]
[WhiteElo "2188"]
[BlackElo "1580"]
[PlyCount "83"]
[EventDate "2022.12.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. b3 Nf6 2. Bb2 g6 3. g3 Bg7 4. Bg2 0-0 5. e3 d5 6. Ne2 c5 7. d4 cxd4 8. Nxd4 Nc6 9. 0-0 e6 10. Nd2 Nxd4 11. Bxd4 Nd7 12. Bxg7 Kxg7 13. c4 Nf6 14. e4 dxc4 15. e5 Nd5 16. bxc4 Nb6 17. Qe2 Qc7 18. Qe4 Rb8 19. Qf4 Bd7 20. h4 h6 21. Rac1 Bc6 22. Bxc6 Qxc6 23. Ne4 Rbd8 24. Nf6 Nd7 25. Ng4 Rh8 26. Rfd1 h5 27. Nf6 Qc7 28. Re1 Nc5 29. Ne4 Nxe4 30. Rxe4 Qe7 31. c5 Rc8 32. Rd4 Rc7 33. Rd6 Rhc8 34. Rcd1 Kg8 35. a4 Rb8 36. a5 Rxc5 37. Rd7 Qe8 38. Qf6 Rc1 39. Rxc1 Qxd7 40. Rc4 Qd8 41. Qf4 Qxa5 42. Rc7 0-1

[Event "ESP-ch U14 Rapid"]
[Site "Salobrena"]
[Date "2022.07.24"]
[Round "6"]
[White "Oubina Pazos, Ricardo"]
[Black "Sierra Pena, Mario"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "1437"]
[BlackElo "1273"]
[PlyCount "128"]
[EventDate "2022.07.23"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bd3 a6 8. Na3 Be6 9. 0-0 Be7 10. Nab1 0-0 11. Bg5 h6 12. Bh4 Qd7 13. Bg3 Rac8 14. Nd2 Rfd8 15. Nc4 Qc7 16. Ne3 Nb4 17. a3 Nxd3 18. cxd3 d5 19. exd5 Nxd5 20. Ncxd5 Bxd5 21. d4 Qb6 22. Bxe5 Bf6 23. Nxd5 Rxd5 24. Qg4 Re8 25. Qf3 Rd7 26. Bxf6 Qxf6 27. Qxf6 gxf6 28. Rfd1 Red8 29. Rac1 Rxd4 30. Rxd4 Rxd4 31. Rc8+ Kg7 32. g3 Rd2 33. b4 Rd3 34. Rc7 b5 35. a4 bxa4 36. Rc6 Rb3 37. Rxa6 Rxb4 38. Kg2 Kg6 39. Kh3 Kg5 40. f4+ Kg6 41. Kg4 Rc4 42. Ra5 Rb4 43. h4 Kg7 44. Kh5 Rc4 45. f5 Rb4 46. g4 Rf4 47. Ra6 Rb4 48. Ra7 Rc4 49. g5 fxg5 50. hxg5 hxg5 51. Kxg5 Rc5 52. Rxa4 f6+ 53. Kg4 Kh6 54. Re4 Kg7 55. Re7+ Kh6 56. Re4 Kg7 57. Kf4 Kh6 58. Rd4 Kg7 59. Kg4 Kh6 60. Ra4 Kg7 61. Kf4 Kh6 62. Kg4 Kg7 63. Ra7+ Kh6 64. Ra4 Kg7 1/2-1/2

[Event "ESP-ch U14 Rapid"]
[Site "Salobrena"]
[Date "2022.07.24"]
[Round "9"]
[White "Pelegrin Serrano, Oriol"]
[Black "Sierra Pena, Mario"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1384"]
[BlackElo "1273"]
[PlyCount "93"]
[EventDate "2022.07.23"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nc6 5. Nf3 Bg4 6. Be2 Nf6 7. 0-0 0-0-0 8. Be3 Kb8 9. dxc5 e6 10. Qxd5 Rxd5 11. b4 Be7 12. h3 Bh5 13. Nbd2 Rhd8 14. Nc4 Ne4 15. b5 Nxc3 16. Bd1 Nxb5 17. Ba4 Nc3 18. Bxc6 bxc6 19. Na5 Rc8 20. Nd4 Rxc5 21. Ndxc6+ R5xc6 22. Nxc6+ Rxc6 23. Kh1 Bf6 24. Rac1 Ra6 25. g4 Bg6 26. g5 Be5 27. f4 Be4+ 28. Kh2 Rxa2+ 29. Rf2 Bxf4+ 30. Bxf4+ Kb7 31. Rxa2 Nxa2 32. Rc7+ Kb6 33. Rxf7 a5 34. Rxg7 Nc3 35. Be3+ Kb5 36. Ra7 a4 37. Bd2 Nb1 38. Ra5+ Kb6 39. Be1 Bd5 40. Rxa4 Kc6 41. Ra7 Be4 42. Kg3 Kd5 43. Kf4 e5+ 44. Ke3 Bf5 45. Ra5+ Kd6 46. Bg3 Nc3 47. Bxe5+ 1-0

[Event "ESP-ch U14 Rapid"]
[Site "Salobrena"]
[Date "2022.07.24"]
[Round "7"]
[White "Sierra Pena, Mario"]
[Black "Marcos Rodriguez, Raul"]
[Result "0-1"]
[ECO "A23"]
[WhiteElo "1273"]
[BlackElo "1656"]
[PlyCount "123"]
[EventDate "2022.07.23"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. g3 Bb4 4. Bg2 c6 5. e3 d5 6. cxd5 cxd5 7. d4 e4 8. Nge2 0-0 9. 0-0 Nc6 10. h3 Be6 11. Nf4 Rc8 12. Bd2 Na5 13. a3 Bd6 14. Nxe6 fxe6 15. Ne2 Nc4 16. Bc3 Bxg3 17. Nxg3 Qc7 18. Qe2 Nd7 19. b3 Nxe3 20. Qxe3 Qxc3 21. Rac1 Qb2 22. b4 Nb6 23. Rb1 Qa2 24. Qb3 Qxb3 25. Rxb3 Nc4 26. Rc3 b5 27. Rfc1 Rf7 28. R1c2 Ra8 29. Bf1 a5 30. Bxc4 bxc4 31. bxa5 Rxa5 32. Rb2 Rfa7 33. Rb6 Kf7 34. Rc2 Rxa3 35. Rcb2 Ra1+ 36. Kg2 c3 37. Rb7+ Kg6 38. Rb1 c2 39. Rxa1 Rxa1 40. Ne2 c1Q 41. Nxc1 Rxc1 42. Rb6 Kf5 43. Rb7 Kf6 44. Rb4 Rc4 45. Rb3 Rxd4 46. Kf1 Rd3 47. Rxd3 exd3 48. Ke1 e5 49. Kd2 e4 50. Ke3 Ke5 51. f4+ exf3 52. Kxf3 Kd4 53. Kf2 Kc3 54. Ke1 Kc2 55. Kf2 d2 56. Kf3 d1Q+ 57. Kf4 Qf1+ 58. Ke5 Qxh3 59. Kd6 g5 60. Ke5 g4 61. Kf4 Qf3+ 62. Kg5 0-1

[Event "ESP-ch U14 Rapid"]
[Site "Salobrena"]
[Date "2022.07.23"]
[Round "1"]
[White "Sierra Pena, Mario"]
[Black "Prada Villagrasa, Pau Manel"]
[Result "0-1"]
[ECO "A14"]
[WhiteElo "1273"]
[BlackElo "1553"]
[PlyCount "136"]
[EventDate "2022.07.23"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 c5 5. 0-0 Nc6 6. b3 Be7 7. Bb2 0-0 8. e3 b6 9. Nc3 Bb7 10. cxd5 exd5 11. d4 cxd4 12. Nxd4 Nxd4 13. Qxd4 Bc5 14. Qh4 Qe7 15. Rad1 Rad8 16. Rd2 Ne4 17. Qxe7 Bxe7 18. Nxe4 dxe4 19. Rfd1 Rxd2 20. Rxd2 Rd8 21. Rxd8+ Bxd8 22. Kf1 f5 23. Ke2 Kf7 24. f3 exf3+ 25. Bxf3 Ba6+ 26. Kf2 g5 27. Bd5+ Kg6 28. Kf3 g4+ 29. Kf2 h5 30. Be5 h4 31. gxh4 Bxh4+ 32. Kg2 Bd3 33. Bb8 a6 34. Bc7 b5 35. Bb7 Be4+ 36. Bxe4 fxe4 37. Bg3 Be7 38. Kf2 Kf5 39. Ke2 Ke6 40. Kd2 Bb4+ 41. Kc2 Kd5 42. Bf4 a5 43. Bg3 a4 44. Bf4 Be7 45. Kc3 Kc5 46. Bg3 Bf6+ 47. Kc2 Bg5 48. Bf2 Kb4 49. Kb2 Bf6+ 50. Kc2 Ka3 51. bxa4 bxa4 52. Kb1 Bg5 53. Kc2 Kxa2 54. Kc3 Bf6+ 55. Kc4 Kb2 56. Kd5 a3 57. Kxe4 a2 58. Kf4 a1Q 59. Kxg4 Kc2 60. h4 Qe5 61. h5 Qg5+ 62. Kf3 Qxh5+ 63. Ke4 Qe5+ 64. Kf3 Kd3 65. Bg1 Qe4+ 66. Kf2 Bh4+ 67. Kf1 Qf3+ 68. Bf2 Qxf2# 0-1

[Event "ESP-ch U14"]
[Site "Salobrena"]
[Date "2022.07.21"]
[Round "6"]
[White "Martinez Rodriguez, Francisco Salvador"]
[Black "Sierra Pena, Mario"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "1762"]
[BlackElo "1454"]
[PlyCount "95"]
[EventDate "2022.07.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. f3 a6 8. Na3 b5 9. Nd5 Be7 10. c3 0-0 11. Be3 Rb8 12. Nc2 Nxd5 13. exd5 Na5 14. b4 Nb7 15. Qd2 Bd7 16. a4 Qc7 17. a5 Nd8 18. 0-0-0 Rc8 19. Kb2 f5 20. Bb6 Qb7 21. Na3 Bf6 22. Nb1 Nf7 23. h4 Rfe8 24. g3 Re7 25. Be3 e4 26. f4 Nh6 27. Be2 g6 28. Rh2 Rf7 29. h5 Ng4 30. Bxg4 fxg4 31. hxg6 hxg6 32. Bd4 Rc4 33. Bxf6 Rxf6 34. Na3 Qc7 35. Nxc4 Qxc4 36. Rdh1 Rf7 37. Rh8+ Kg7 38. Qd4+ Qxd4 39. cxd4 Kf6 40. Ra8 Re7 41. Rxa6 e3 42. Rxd6+ Kf5 43. Re1 Ke4 44. a6 Bf5 45. Rc6 Kf3 46. Rc3 Kf2 47. Rexe3 Rxe3 48. d6 1-0

[Event "ESP-ch U14"]
[Site "Salobrena"]
[Date "2022.07.20"]
[Round "5"]
[White "Sierra Pena, Mario"]
[Black "Torres Rebolledo, Marcos"]
[Result "1-0"]
[ECO "A14"]
[WhiteElo "1454"]
[BlackElo "1649"]
[PlyCount "65"]
[EventDate "2022.07.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 e6 3. b3 Nf6 4. Bb2 Be7 5. g3 c5 6. Bg2 Nc6 7. 0-0 0-0 8. cxd5 Nxd5 9. d4 cxd4 10. Nxd4 Nxd4 11. Bxd4 Bf6 12. Qd2 Nf4 13. Bxf6 Qxf6 14. gxf4 Rd8 15. Qa5 Rd5 16. Bxd5 exd5 17. Qc3 Qxf4 18. Qg3 Qf6 19. Nd2 h5 20. Nf3 Bg4 21. Rad1 Qf5 22. Rd3 Bh3 23. Nh4 Qe6 24. Qxh3 Qxe2 25. Qf3 Qe7 26. Qg3 Qe6 27. Re3 Qf6 28. Rfe1 Qc6 29. Nf5 Qf6 30. Qxg7+ Qxg7+ 31. Nxg7 Kxg7 32. Re8 Rxe8 33. Rxe8 1-0

[Event "ESP-ch U14"]
[Site "Salobrena"]
[Date "2022.07.19"]
[Round "3"]
[White "Sierra Pena, Mario"]
[Black "Benseny Martinez, Guerau"]
[Result "1/2-1/2"]
[ECO "C20"]
[WhiteElo "1454"]
[BlackElo "1815"]
[PlyCount "59"]
[EventDate "2022.07.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e5 2. c4 Nc6 3. Nc3 Bc5 4. g3 Nge7 5. Bg2 0-0 6. Nge2 d6 7. 0-0 a6 8. a3 f5 9. d3 Ba7 10. Be3 Nd4 11. Nd5 c6 12. Nxe7+ Qxe7 13. Nxd4 Bxd4 14. Bxd4 exd4 15. Qd2 Qf6 16. f4 Bd7 17. Rae1 Rab8 18. e5 dxe5 19. Rxe5 Rfe8 20. Rfe1 Rxe5 21. Rxe5 Re8 22. Rxe8+ Bxe8 23. Qe2 Kf7 24. b4 Qe6 25. Qxe6+ Kxe6 26. Bf3 Kf6 27. Kf2 Ke6 28. Kg1 Kf6 29. Kf2 Ke6 30. Kg1 1/2-1/2

[Event "ESP-ch U14"]
[Site "Salobrena"]
[Date "2022.07.18"]
[Round "1"]
[White "Sierra Pena, Mario"]
[Black "Lorente Melcon, Maximo"]
[Result "1/2-1/2"]
[ECO "A14"]
[WhiteElo "1454"]
[BlackElo "1931"]
[PlyCount "107"]
[EventDate "2022.07.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. b3 c5 4. Bb2 Be7 5. g3 d5 6. Bg2 0-0 7. 0-0 Nc6 8. e3 Re8 9. cxd5 exd5 10. d4 Ne4 11. Qe2 Bg4 12. h3 Bf5 13. Rd1 Qa5 14. dxc5 Qxc5 15. Nd4 Bg6 16. Rc1 Qb6 17. Nd2 Nf6 18. N2f3 Bd6 19. Rd1 Rad8 20. Rac1 Bb8 21. Qe1 Ne4 22. Nh4 Be5 23. Nxg6 hxg6 24. Nxc6 bxc6 25. Bxe5 Rxe5 26. Bxe4 Rxe4 27. Qc3 Re6 28. Qc5 Qa6 29. Rc2 g5 30. Kg2 Rh6 31. g4 Re6 32. Rd4 Qb7 33. Rb4 Qd7 34. Ra4 Ra8 35. Ra6 Rc8 36. Rxa7 Qe8 37. Qd4 Re4 38. Qb6 Rxg4+ 39. hxg4 Qe4+ 40. Kg3 Qxc2 41. Rxf7 Qc1 42. Kg2 Kxf7 43. Qb7+ Kg6 44. Qxc8 Qc5 45. a4 Qb4 46. Qxc6+ Kh7 47. Qc2+ Kh6 48. f3 Qe1 49. Qa2 Qxe3 50. a5 d4 51. a6 d3 52. a7 d2 53. a8Q Qe2+ 54. Kg3 1/2-1/2

[Event "ESP-ch U14"]
[Site "Salobrena"]
[Date "2021.07.12"]
[Round "2"]
[White "Munoz Valles, Jorge"]
[Black "Sierra Pena, Mario"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "1750"]
[BlackElo "1376"]
[PlyCount "81"]
[EventDate "2021.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c5 7. Bd3 cxd4 8. cxd4 Bb4+ 9. Kf1 0-0 10. e5 Nd7 11. Nf3 h6 12. g3 Nb6 13. Rb1 Nd5 14. Bc2 h5 15. Nh4 g6 16. Qd3 f5 17. Nxg6 Rf7 18. Qf3 Rh7 19. Bb3 Nc3 20. Rb2 Qxd4 21. Qxf5 Rf7 22. Be3 Qd1+ 23. Bxd1 Rxf5 24. Rxb4 Nxd1 25. Ne7+ Kf7 26. Nxf5 exf5 27. Bd2 f4 28. Ke2 Bg4+ 29. f3 Ne3 30. Bxe3 Bxf3+ 31. Kxf3 fxe3 32. Rxb7+ Ke6 33. Rb5 Rc8 34. Kxe3 Rc3+ 35. Kf4 h4 36. Rd1 hxg3 37. Rd6+ Ke7 38. Rb7+ Ke8 39. Rh6 Rf3+ 40. Kxf3 g2 41. Rh8# 1-0

[Event "ESP-ch U14"]
[Site "Salobrena"]
[Date "2021.07.12"]
[Round "1"]
[White "Sierra Pena, Mario"]
[Black "Tudela Gonzalez, Victor"]
[Result "1-0"]
[ECO "A25"]
[WhiteElo "1376"]
[BlackElo "1774"]
[PlyCount "65"]
[EventDate "2021.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. g3 Bc5 4. Bg2 f5 5. e3 Nf6 6. Nge2 e4 7. 0-0 Ne5 8. Nf4 d6 9. d4 exd3 10. Nxd3 Nxd3 11. Qxd3 c6 12. a3 Bb6 13. b4 Be6 14. Rd1 Bc7 15. b5 Qd7 16. bxc6 bxc6 17. Nb5 cxb5 18. Bxa8 Bxc4 19. Qd4 d5 20. Qc5 Bb6 21. Qc6 Ke7 22. Rb1 Rb8 23. Bb2 Ba2 24. Bxf6+ gxf6 25. Qxd7+ Kxd7 26. Rb2 Rxa8 27. Rxa2 Ke6 28. Rb2 Rd8 29. Rxb5 d4 30. exd4 Bxd4 31. Kg2 Rd7 32. Rb4 Ke5 33. Re1+ 1-0

[Event "ESP-ch U12"]
[Site "Salobrena"]
[Date "2020.08.01"]
[Round "9"]
[White "Sierra Pena, Mario"]
[Black "Molina Ortega, Carlos"]
[Result "0-1"]
[ECO "A25"]
[WhiteElo "1335"]
[BlackElo "1571"]
[PlyCount "72"]
[EventDate "2020.07.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. c4 g6 2. Nc3 Bg7 3. g3 Nc6 4. Bg2 d6 5. e3 e5 6. Nge2 Be6 7. b3 Qd7 8. 0-0 Bh3 9. Bb2 h5 10. f3 Bxg2 11. Kxg2 h4 12. g4 0-0-0 13. h3 f5 14. a3 e4 15. Nf4 exf3+ 16. Qxf3 Ne5 17. Qd5 g5 18. d4 fxg4 19. dxe5 gxh3+ 20. Nxh3 Qg4+ 21. Kf2 Qxh3 22. Ke2 dxe5 23. Qf7 Qg4+ 24. Rf3 e4 25. Qf5+ Qxf5 26. Rxf5 g4 27. Rg5 Rd7 28. Rxg4 Nf6 29. Rf4 Nh5 30. Rg4 Ng3+ 31. Kf2 Be5 32. Rg5 Rd2+ 33. Kg1 Bxc3 34. Bxc3 Ne2+ 35. Kh1 Nxc3 36. Rc1 Rd1+ 0-1

[Event "ESP-ch U12"]
[Site "Salobrena"]
[Date "2020.07.31"]
[Round "8"]
[White "Martos Martin, Daniel"]
[Black "Sierra Pena, Mario"]
[Result "0-1"]
[ECO "C70"]
[WhiteElo "1109"]
[BlackElo "1335"]
[PlyCount "96"]
[EventDate "2020.07.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 a6 5. Ba4 b5 6. Bb3 g6 7. d4 exd4 8. cxd4 Bg7 9. 0-0 0-0 10. Bf4 d5 11. e5 Be6 12. Qc1 Bg4 13. Nbd2 Na5 14. Bd1 Nc4 15. h3 Be6 16. b3 Na5 17. Re1 Nb7 18. b4 Qd7 19. Nb3 Rae8 20. Nh2 Nc6 21. a3 f6 22. Ng4 fxe5 23. Nxe5 Nxe5 24. Bxe5 Bf5 25. Bf3 c6 26. Nc5 Nxc5 27. Qxc5 Bxe5 28. Rxe5 Rxe5 29. dxe5 Be4 30. Bg4 Bf5 31. Bf3 Re8 32. Re1 Qc7 33. Bxd5+ Kg7 34. Bxc6 Rc8 35. Rc1 Qf7 36. Qe3 Qc7 37. Rc5 Qb6 38. Bd5 Rd8 39. Qc3 Kf8 40. Rc6 Qb8 41. Ba2 Re8 42. Rc7 Re7 43. Qc5 Qxc7 44. Qd5 Be6 45. Qf3+ Rf7 46. Qa8+ Qc8 47. Qxc8+ Bxc8 48. f3 Rc7 0-1

[Event "ESP-ch U12"]
[Site "Salobrena"]
[Date "2020.07.31"]
[Round "7"]
[White "Pinyol I Llora, Julia"]
[Black "Sierra Pena, Mario"]
[Result "1-0"]
[ECO "E05"]
[WhiteElo "1530"]
[BlackElo "1335"]
[PlyCount "95"]
[EventDate "2020.07.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Be7 5. Bg2 0-0 6. 0-0 dxc4 7. Qc2 a6 8. Qxc4 b5 9. Qc2 Bb7 10. Bg5 Nbd7 11. Bxf6 Nxf6 12. Nbd2 Rc8 13. Nb3 Bd6 14. Rac1 Qe7 15. Ne1 Bxg2 16. Kxg2 Nd7 17. Nd3 Rfd8 18. e4 e5 19. d5 Nb8 20. Na5 Qd7 21. Nc6 Nxc6 22. Qxc6 Qxc6 23. Rxc6 Ra8 24. Rfc1 a5 25. Nc5 Ra7 26. Nd3 f6 27. Nc5 Kf7 28. Ne6 Rd7 29. f4 a4 30. a3 Kg6 31. f5+ Kf7 32. g4 Kg8 33. h4 Re7 34. Kf3 h6 35. g5 Kh7 36. gxf6 gxf6 37. Rg1 Ra8 38. Rg6 Rf7 39. Rc1 Re8 40. Rcg1 Bf8 41. Kg4 Bg7 42. Kh5 Rg8 43. Nxg7 Rgxg7 44. Rxh6+ Kg8 45. Rxg7+ Kxg7 46. Rg6+ Kh7 47. Kg4 Rg7 48. h5 1-0

[Event "ESP-ch U12"]
[Site "Salobrena"]
[Date "2020.07.30"]
[Round "6"]
[White "Sierra Pena, Mario"]
[Black "Marcos Rodriguez, Raul"]
[Result "1-0"]
[ECO "A25"]
[WhiteElo "1335"]
[BlackElo "1529"]
[PlyCount "57"]
[EventDate "2020.07.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. g3 Bc5 4. Bg2 d6 5. e3 Be6 6. b3 f5 7. Nge2 Qf6 8. 0-0 Nge7 9. Bb2 0-0-0 10. Na4 Bb6 11. d4 Bf7 12. Nxb6+ axb6 13. d5 Nb8 14. b4 g5 15. a4 Bh5 16. Qc2 Bxe2 17. Qxe2 h5 18. f4 h4 19. fxe5 dxe5 20. g4 Rdf8 21. gxf5 h3 22. Bf3 g4 23. Bxg4 Rfg8 24. Kh1 Rh4 25. Rg1 Nxf5 26. Bxf5+ Qxf5 27. Rxg8+ Kd7 28. Rf1 Qe4+ 29. Qf3 1-0

[Event "ESP-ch U12"]
[Site "Salobrena"]
[Date "2020.07.29"]
[Round "5"]
[White "Sierra Pena, Mario"]
[Black "Oubina Pazos, Cesar"]
[Result "1-0"]
[ECO "A86"]
[WhiteElo "1335"]
[BlackElo "1189"]
[PlyCount "89"]
[EventDate "2020.07.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. c4 f5 2. Nc3 Nf6 3. g3 g6 4. Bg2 Bg7 5. e3 0-0 6. Nge2 d6 7. 0-0 c6 8. d4 Nbd7 9. a3 a5 10. Qd3 e5 11. b3 e4 12. Qc2 d5 13. cxd5 Nxd5 14. Nxd5 cxd5 15. Bd2 b6 16. Qc6 Ba6 17. Qxd5+ Kh8 18. Rfe1 Ne5 19. Qxd8 Rfxd8 20. Nf4 Nd3 21. Nxd3 Bxd3 22. Rec1 Rac8 23. Bf1 Rc2 24. Rxc2 Bxc2 25. b4 axb4 26. Bxb4 Bf8 27. Bxf8 Rxf8 28. Bb5 Ra8 29. a4 Bd3 30. Bxd3 exd3 31. Kf1 Rc8 32. Rd1 Rc3 33. Rd2 Kg7 34. f3 Rc1+ 35. Kf2 Rc2 36. Ke1 Rc3 37. e4 Kf6 38. Kf2 Rc4 39. Rxd3 Rxa4 40. h4 b5 41. Ke3 b4 42. Kf4 Ra3 43. Rd2 h6 44. e5+ Ke6 45. d5+ 1-0

[Event "ESP-ch U12"]
[Site "Salobrena"]
[Date "2020.07.29"]
[Round "4"]
[White "Sureda Gonzalez, Cristina"]
[Black "Sierra Pena, Mario"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "1587"]
[BlackElo "1335"]
[PlyCount "37"]
[EventDate "2020.07.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Be3 d6 4. Bc4 Nd7 5. Nf3 a6 6. c3 b5 7. Bb3 Bb7 8. Ng5 Nh6 9. Nd2 0-0 10. h4 c5 11. h5 c4 12. hxg6 cxb3 13. gxf7+ Nxf7 14. Ne6 Qe8 15. Qg4 Ng5 16. Nxf8 Qxf8 17. Qxd7 Bxe4 18. Nxe4 Nxe4 19. Qe6+ 1-0

[Event "ESP-ch U12"]
[Site "Salobrena"]
[Date "2020.07.28"]
[Round "3"]
[White "Sierra Pena, Mario"]
[Black "Carrasco Gomez, Ariadna"]
[Result "1-0"]
[ECO "A36"]
[WhiteElo "1335"]
[BlackElo "1223"]
[PlyCount "59"]
[EventDate "2020.07.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 d6 3. d3 g6 4. e4 Bg7 5. g3 0-0 6. Bg2 c5 7. Nge2 Nc6 8. 0-0 a6 9. Rb1 Rb8 10. a3 Ne8 11. b4 b6 12. h3 Nc7 13. f4 Ne6 14. Be3 Bd7 15. Qd2 Ned4 16. g4 Re8 17. f5 f6 18. Nf4 Qc7 19. Ncd5 Qd8 20. fxg6 hxg6 21. Nxg6 Kh7 22. Nh4 e6 23. Nf4 Re7 24. Nh5 Rf7 25. g5 Kg8 26. g6 Rf8 27. Bh6 Bxh6 28. Qxh6 Qe7 29. g7 Kf7 30. Rxf6+ 1-0

[Event "ESP-ch U12"]
[Site "Salobrena"]
[Date "2020.07.27"]
[Round "2"]
[White "Cesar Maestre, Eduardo"]
[Black "Sierra Pena, Mario"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1449"]
[BlackElo "1335"]
[PlyCount "69"]
[EventDate "2020.07.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 Bf5 4. e3 e6 5. c4 c6 6. Nc3 Nbd7 7. h3 Nb6 8. c5 Nc8 9. Be2 Be7 10. 0-0 0-0 11. b4 b6 12. Ne5 Qe8 13. Qa4 a6 14. Qxc6 Qxc6 15. Nxc6 b5 16. a4 bxa4 17. Rxa4 Bd8 18. Rxa6 Rxa6 19. Bxa6 Ne7 20. Nxe7+ Bxe7 21. b5 Bd3 22. Ra1 Ra8 23. Na4 Ne8 24. c6 Bd6 25. Nb6 Rb8 26. Bxd6 Nxd6 27. Nd7 Ra8 28. Ra4 f6 29. Nc5 Bc4 30. Nxe6 Re8 31. Nc7 Re7 32. b6 Kf7 33. Bxc4 Nxc4 34. Nxd5 Re8 35. Rxc4 1-0

[Event "ESP-ch U12"]
[Site "Salobrena"]
[Date "2020.07.27"]
[Round "1"]
[White "Sierra Pena, Mario"]
[Black "Tabuenca Mendataurigoitia, Daniel"]
[Result "1/2-1/2"]
[ECO "C20"]
[WhiteElo "1335"]
[BlackElo "1865"]
[PlyCount "91"]
[EventDate "2020.07.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. e4 Bc5 4. d3 d6 5. g3 h5 6. h3 h4 7. g4 Nge7 8. Bg2 Ng6 9. Nge2 Be6 10. 0-0 Qf6 11. Nd5 Bxd5 12. cxd5 Nd4 13. Nxd4 Bxd4 14. Be3 0-0 15. Qd2 Bxe3 16. fxe3 Qe7 17. Rac1 Rfc8 18. Rc4 c5 19. Rfc1 b5 20. R4c2 a5 21. d4 Nf8 22. dxc5 Rxc5 23. Rxc5 dxc5 24. Bf1 c4 25. b3 cxb3 26. axb3 Qb7 27. Qc3 Qb6 28. Kf2 a4 29. bxa4 Qf6+ 30. Kg2 bxa4 31. Ra1 Qb6 32. Kf3 Nd7 33. Qc6 Qxc6 34. dxc6 Nc5 35. Ra3 Kf8 36. Bb5 Ke7 37. Bc4 g5 38. Bd5 f6 39. Ke2 Kd6 40. Kd2 Rb8 41. Kc3 Rb1 42. Kc4 Na6 43. Rxa4 Nc7 44. Rb4 Rc1+ 45. Kd3 Nxd5 46. exd5 1/2-1/2

